Alert archive / Washington / Wind Chill Advisories in 2020

Wind Chill Advisory 1, NWS Spokane, WA

January 13, 2020Douglas County, Grant County, Okanogan County, Washington

NWS Spokane, WA issued this wind chill advisory at Jan 13, 2020, 2:41 PM PST for Douglas County, Grant County, Okanogan County, Washington. It took effect at Jan 13, 2020, 7:00 PM PST. It was in force for 17 hr.

The area

The counties it named.

The facts

Issued: Jan 13, 2020, 2:41 PM PST (22:41 UTC)
In effect from: Jan 13, 2020, 7:00 PM PST
Expired: Jan 14, 2020, 12:00 PM PST
In force: 17 hr
Issued by: NWS Spokane, WA

Counties Douglas County, WA, Grant County, WA, Okanogan County, WA

The radar

The Spokane radar (KOTX), 151 km from the middle of the area, began a volume at 22:40 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Quillayute State, WA (KUIL), launched 12:00Z, 10.7 hours before the alert went out and 363 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 887 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 152 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this wind chill advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Spokane, WA wrote its last area forecast discussion before this wind chill advisory went out at Jan 13, 12:04 PM PST, 2 hours 37 minutes earlier.

Area forecast discussion, Jan 13, 12:04 PM PST, 2 hours 37 minutes before

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Hazardous weather outlook, Jan 13, 5:00 AM PST, 9 hours 41 minutes before

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In the hours before

Local storm report, Jan 13, 9:59 AM PST, 4 hours 42 minutes before

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Local storm report, Jan 13, 10:01 AM PST, 4 hours 40 minutes before

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Local storm report, Jan 13, 10:02 AM PST, 4 hours 39 minutes before

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Local storm report, Jan 13, 10:14 AM PST, 4 hours 27 minutes before

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Local storm report, Jan 13, 10:18 AM PST, 4 hours 23 minutes before

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Local storm report, Jan 13, 10:25 AM PST, 4 hours 16 minutes before

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The office that day

Everything else NWS Spokane, WA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 12, 4:51 PM PST	Wind Advisory	OTX	Douglas, Okanogan	19 hr
Jan 13, 5:10 AM PST	Winter Weather Advisory	OTX	Asotin, Garfield, Lincoln, Spokane, Whitman	3 days

Nearby

Wind Chill Advisories in Washington, 2020 Every wind chill advisory in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.